Advertisement

Position

Sun Exposure:
Dappled shade, full sun
Aspect:
South facing, west facing
Position in Border:
Back, middle

Soil

Clay / Heavy / Moist / Well Drained / Light / Sandy

The hollyhock, Alcea, is a classic English cottage garden plant, forming tall erect racemes of large, fully open blooms from summer to early autumn. Plants are typically perennial, but they're often grown as biennials due to their susceptibility to the fungal disease rust, which can disfigure leaves.

Alcea 'Black Knight' bears incredible, single to semi-double, almost black flowers in dramatic, tall flower spikes. It's easy to grow and perfect for planting in groups at the back of a sunny border. For best results, grow in moist but well-drained soil in full sun to partial shade. Cut down Alcea 'Blacknight' after flowering to encourage fresh basal growth.

Advertisement

Plant calendar

JanFebMarAprMayJunJulAugSepOctNovDec
Sowyesyes
Plantyesyes
Flowersyesyesyesyes
Pruneyesyes

Alcea ‘Blacknight’ and wildlife

Alcea ‘Blacknight’ is known for attracting bees and other pollinators. It has nectar/pollen rich flowers.

Is known to attract Bees
Bees
Is not known to attract Beneficial insects
Beneficial insects
Is not known to attract Birds
Birds
Is not known to attract Butterflies/​Moths
Butterflies/​Moths
Is known to attract Other pollinators
Other pollinators

Is Alcea ‘Blacknight’ poisonous?

Alcea ‘Blacknight’ has no toxic effects reported.

No reported toxicity to:
Is not known to attract Birds
Birds
Is not known to attract Cats
Cats
Is not known to attract Dogs
Dogs
Is not known to attract Horses
Horses
Is not known to attract Livestock
Livestock
Is not known to attract People
People
Advertisement
Advertisement
Advertisement
Advertisement